It is difficult to open the ports to install new anode rods, and the difficulty increases as the water heater ages due to corrosion.Corro-Protec has 2 models, one for dedicated anode ports (AO Smith) and one for inline in the hot water line (Bradford White):https://www.amazon.com/s?

But I admire your tenacity and ‘go-gettiveness’I would encourage you to find your local real estate meet-us and start circulating there if you haven’t done ao yet.  

Look at your AOS and see what it says.

I had an AO smith with long warranty,   It died at near year 10.  

@Douglas VogelListsource is the best place in my opinion to get AO lists.

View reportJust got an AOS on the attached property.

But for my local market I am bullish, so we continue to grow our rental protfolio, maybe I can still get a few more AO's before the spring market hits us. 

@Aaron Klatt yes it’s credit cards, it’s because I been listening to BP podcasts for about a month and I am ao excited that I just want to jump in the water and do flips to replace my income and then move into Buy and hold.

We lIve In the country, ao houaea are scarce, but they ARE out there I knIw It!!

You'd be amazed how much things change when the other half feels they have a voice a/o their opinion matters.